Metallic lathing.



No. 642,056. Patented Ian. 23, I900. e. A. TURNBULL.

METALLIC LATHING.

Application filed Mar. 24. 1899.)

No Model.)

Unirrnn Srarns PATENT Orricn.

GEORGE A. TURNBULL, OF CHICAGO, ILLINOIS, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO ROSELLA E. TURNBULL AND RAYMOND G. SYKES, OF SAME PLACE.

- lVl ETALLlG LATHING.

sPECIFICATION forming part of Letters Patent No. 642,056, dated January 23, 1900.

Application filed March 24:, 1899. Serial No. 710,361. (No model.)

To (LZZ whom it 11mg concern: Fi 1 is a top plan view of a portion of Be it known that I, GEORGE A. TURNBULL, my improved lath. Fig. 2 is a bottom plan a citizen of the United States, residing at Chiview thereof. Fig. 3 is a section on line 3 3, cago, in the county of Cook and State of Illi- Fig. 1. Fig. 4 is a section on line 4: 4, Fig. 1. 5 nois, have invented certain new and useful Fig. 5 is an enlarged section on line 5 5, Fig.

Improvements in Laths; and I do hereby de- 1; and Fig. 6 is an enlarged section on line clare the following to be afull, clear, and exact 6 6, Fig. 1.

description of the invention, such as will en- As shown in the drawings, the lath is formed able others skilled in the art to which it apof a single sheet of metal provided with equi- IO pertains to make and use the same. distant parallel slits alternately arranged.

This invention relates to an improvement These slits are opened out at their centers, in metallic laths; and its object is to provide forcing the metal at those points in one dia lath of simple and economic construction rection out of the plane of the blank, and which can be used with either edge up and sethereby forming short webs or ribs a, having 15 curely retain the mortar or plaster thereon their ends twisted in opposite directions, as

and which can be manufactured by rolling shown, and forming keys or cups b, arranged instead of stamping the metal. Heretofore in in alternating series, each key having its sides manufacturing metallic laths of this characconverging toward its ends and inclined toter it has been found necessary, owing to the ward each other at the center for the pur 2o peculiar form of the product, to stamp, out, posehereinafter described. Itis obvious that and form the same, which method is objecas one inclined side 0 of one key is adjacent 7o tionable. To overcomethis objectionablefeato one inclined side 0 of the adjoining key ture, I have produced a lath of such form as and as both of said sides are bent outwardly may be rolled into properfinished condition and inwardlya channel d is formed, as shown.

25 at a great saving of cost of manufacture, said The laths are placed upon the wall or ceillath possessing many advantages over those ing with the channels cl outward. The morheretofore constructed. My lath is of such tar or plaster may then be placed thereover construction as to permit it to be placed in and will, as is obvious, pass into the cups or position with either edge downward, thereby keys I) and spread behind the twisted webs a 30 saving the time ordinarily expended in arand the inclined sides c'formed thereby, thus ranging the laths with their half -keys in firmly keying the mortar in place. It will be proper position to retain the mortar. The obvious that While this lath is preferably arconstruction thereof is also such as to make ranged with the channels d thereof horizontal, it especially adapted for use on ceilings or in yet it can be arranged in any position and 3 5 other places where the plaster is liable to still securely retain the plaster or mortar break away under the force of gravity or by therein, the twisted webs a at all times servjarring, &c., from the face of the lathing. ing as a bar to the downward movement of The invention consists principally in prothe mortar and keying it firmly thereto. viding the lath with double keys and twisted WVhile in the foregoing description I have 0 or spiral webs, whereby the mortar when shown the preferred form of my invention, I

placed thereon will, as is hereinafter dedo not limit myself thereto, as I am aware 9o scribed, become firmly lodged or fixed against that modifications may be made therein withdisplacement. out departing from the spirit or sacrificing The invention also consists in the further the advantages thereof, and I therefore re- 45 novel constructions and combinations of serve the right to make such changes as fairly parts, as will be hereinafter more fully defall within the scope of my invention scribed and claimed and as illustrated in the Having thus described my invention, what accompanying drawings, showing the pre- I therefore claim as new, and desire to secure ferred form of my invention, in whichby Letters Patent, is-

1. A metallic lath comprising twisted webs formed in a single piece of metal.

2. A metallic lath comprising parallel series of keys having inclined convergent sides.

3. A metallic lath comprising spiral or twisted webs made from a single piece of metal and forming parallel series of alternately-arranged cups having convergent sides,subst-antially as described.

4-. A metallic lath comprising a series of keys each converging toward its ends and formed of reversely-twisted webs, substantially as described.

5. A metallic lath comprising parallel series of keys each key having inwardly-inclined, convergent sides.

In testimony whereof I aifix my signature in presence of two witnesses.

GEORGE A. TURNBULL.

Witnesses:

J NO. MGLAUOHLAN, S. E. GOODING. 

